WIDE-BAND PEAK DETECTION FOR AN RF RECEIVER

    公开(公告)号:US20250112658A1

    公开(公告)日:2025-04-03

    申请号:US18374843

    申请日:2023-09-29

    Abstract: A wideband power detector (peak or RMS) is placed in a base-band portion of a receiver chain implemented with a current mode RF front end. A differential transimpedance amplifier (TIA) includes a current sense circuit that replicates the input currents to the TIA as current sense output voltages without the current sense output voltages being affected by the filter characteristics of the TIA.

    KALMAN FILTER BASED PHASE-LOCKED LOOP WITH RE-ENCODING BASED PHASE DETECTOR

    公开(公告)号:US20250088345A1

    公开(公告)日:2025-03-13

    申请号:US18392416

    申请日:2023-12-21

    Abstract: A wireless communications device includes a receiver having a phase detector configured to extract frequency offset and provide a corresponding error signal generated based on a baseband version of a received radio frequency signal and an expected transmitted data signal. The receiver has a phase-locked loop configured to generate an error correction signal based on a phase of the error signal and a predicted instantaneous phase of the error signal. The receiver has a correction circuit configured to provide a corrected baseband version of the received radio frequency signal based on the baseband version of the received radio frequency signal and the error correction signal. The receiver may have a re-encoding-based processing circuit configured to provide the expected transmitted data signal based on a preliminarily decoded symbol.

    SYSTEM, METHOD AND APPARATUS FOR REDUCING INTERFERENCE DURING CONCURRENT WIRELESS ACTIVITY IN COMMON BAND

    公开(公告)号:US20250080140A1

    公开(公告)日:2025-03-06

    申请号:US18240636

    申请日:2023-08-31

    Abstract: In one embodiment, an apparatus includes: a first radio frequency (RF) circuit to transmit and receive at a 2.4 GHz band according to a first wireless communication protocol; a second RF circuit to transmit and receive at a 2.4 GHz band according to a second wireless communication protocol; and a selection filter coupled to the first RF circuit and the second RF circuit. The selection filter may include: a first filter to couple to the first RF circuit, the first filter configured for a first wireless channel within the 2.4 GHz band; and a second filter to couple to the second RF circuit, the second filter configured for a second wireless channel within the 2.4 GHz band.

    NOISE-SHAPING CONVERTER WITH DIGITAL MODULATOR

    公开(公告)号:US20250080134A1

    公开(公告)日:2025-03-06

    申请号:US18454111

    申请日:2023-08-23

    Inventor: Gang Yuan

    Abstract: In one aspect, an apparatus includes: a first feedback digital-to-analog converter (DAC) to receive a first feedback signal from a first successive approximation register (SAR) and output a first analog signal; a comparator to compare the first analog signal with a reference voltage; the first SAR to store a digital value based on the comparison and provide the first feedback signal to the first DAC; a second feedback DAC to receive a modulated quantized residual error based on the comparison and output a second analog signal; a second SAR to store a quantized residual error; and a delta-sigma modulator (DSM) to modulate the quantized residual error and provide the modulated quantized residual error to the second feedback DAC.

    Improving accuracy of round-trip time (RTT) in high accuracy distance measurements (HADM)

    公开(公告)号:US12245182B2

    公开(公告)日:2025-03-04

    申请号:US17980704

    申请日:2022-11-04

    Inventor: Guner Arslan

    Abstract: A system and method to improve the accuracy of the measurement of round trip delay in a high accuracy distance measurement (HADM) is disclosed. In one embodiment, the traditional parabolic estimation is used. However, an estimation error is used to compensate for the inaccuracy of the parabolic estimation. This correction may reduce the standard deviation of a measurement by 50% or more. In another embodiment, the parabolic estimation is not used; rather, a different estimation is used, such as an absolute value estimation. In some tests, the absolute value estimation improved the mean measurement value and reduced the standard deviation by 50%.

    VOLTAGE GLITCH DETECTORS
    8.
    发明申请

    公开(公告)号:US20250060409A1

    公开(公告)日:2025-02-20

    申请号:US18235156

    申请日:2023-08-17

    Abstract: Positive and negative glitch detectors detect glitches on a supply voltage node. The positive glitch detector has a capacitor and a resistor serially coupled between the supply voltage node and ground. An amplifier is coupled to a first node between the capacitor and resistor. A positive glitch results in the glitch on the first node (normally biased low) and generation of a clock pulse by the amplifier that causes a latch to assert its output to indicate the positive glitch. The negative glitch detector has a capacitor and resistor coupled in parallel between the supply voltage node and a second node. A negative glitch on the supply voltage node decreases the voltage on the second node (normally biased high) and an inverting amplifier coupled to the second node generates a clock pulse to cause a latch to assert its output to indicate the negative voltage glitch.

    FAST RF POWER MEASUREMENT APPARATUS FOR PRODUCTION TESTING

    公开(公告)号:US20250044393A1

    公开(公告)日:2025-02-06

    申请号:US18921236

    申请日:2024-10-21

    Inventor: Anant Verma

    Abstract: A system and method for performing production testing on high power semiconductor devices is disclosed. The system includes signal generators, RF meters, sockets, couplers and connectors which also function as switches when connected to an external cable. A calibration process is executed which allows the controller to create a correlation between measurements taken by the RF meter and the actual voltages, and power levels present at the device under test. By performing this calibration, it is possible to perform production testing of devices much more quickly and reliably.

    ROM/OTP Patching Using ECC/Parity Manipulation

    公开(公告)号:US20250036504A1

    公开(公告)日:2025-01-30

    申请号:US18225471

    申请日:2023-07-24

    Inventor: Thomas David

    Abstract: Methods of performing updates to a software image that is disposed in a read only memory or a one time programmable memory device are disclosed. The method includes causing an ECC error at the beginning of a function that has been modified. This ECC error causes an exception. The exception handler determines the address where the ECC error was detected was located and searches a dictionary. This dictionary contains entries that each have an original address in the ROM or OTP Memory and the patch address in a nonvolatile writable memory. The exception handler then causes the processing unit to jump to the patch address, where a modified function is located.

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